505429-JTG-L-0512
124 Johnson Controls Unitary Products
Typical Field Wiring Diagram - J10 thru 20ND Evaporator Unit with J10 thru 20YD Condenser Unit
NOTE: On non J**NC/ND Evaporator models, isolation
relays must be installed to avoid overloading on 75
VA transformers on the condensing unit.
THERMOSTAT
TWO STAGE COOLING
TWO STAGE HEATING
G C
Y1
RW1 W2 X
Y2
NOTE: Liquid line solenoid is not included or required
on any 4 pipe units.
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